KAI Tests B50 Biodiesel to Accelerate Energy Transition

State-owned railway operator PT Kereta Api Indonesia (Persero), or KAI, has begun testing B50 biodiesel for its train operations as part of a broader effort to speed up the energy transition and bolster the government's renewable energy initiatives.

KAI President Director Bobby Rasyidin stated that the B50 trial is a logical progression in the company's long-term roadmap for biodiesel utilization. He emphasized that energy transformation within the transportation sector requires careful operational planning to maintain safety, service dependability, and energy efficiency. "Indonesia's energy transformation needs a transportation sector that can adapt measurably. KAI strengthens the role of railways through a biodiesel roadmap from B0 to B50, ensuring each stage aligns with safety, service reliability, energy efficiency, and emission reduction," Rasyidin said.

Rasyidin highlighted the strategic importance of the railway sector in supporting national energy security, given its role in large-scale public mobility and logistics distribution. KAI's energy efficiency efforts are expected to directly benefit public transportation services and enhance national logistics competitiveness. "KAI must ensure that the energy transition yields tangible benefits, both in terms of service reliability, energy efficiency, and contribution to environmental sustainability," he added.

KAI Corporate Communication Vice President Anne Purba detailed that technical testing of B50 commenced in April 2026, in collaboration with the Ministry of Energy and Mineral Resources. The tests are being conducted on locomotives and train generators to assess engine performance, fuel consumption, emissions, and the durability of the equipment under operational conditions. Specific tests involve a CC206 locomotive with the Sembrani train and generators on the Bogowonto train, comparing B40 and B50 fuel performance. "The test results will form the basis for KAI's evaluation, particularly regarding engine performance, fuel consumption, operational stability, filter condition, emission aspects, and maintenance needs. Our principle is clear: energy transition must proceed in line with operational safety and reliability," Purba stated.